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-rw-r--r--sim/igen/ld-decode.c411
1 files changed, 0 insertions, 411 deletions
diff --git a/sim/igen/ld-decode.c b/sim/igen/ld-decode.c
deleted file mode 100644
index 856b1ad..0000000
--- a/sim/igen/ld-decode.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/* The IGEN simulator generator for GDB, the GNU Debugger.
-
- Copyright 2002 Free Software Foundation, Inc.
-
- Contributed by Andrew Cagney.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-
-/* load the opcode stat structure */
-
-#include "misc.h"
-#include "lf.h"
-#include "table.h"
-#include "filter.h"
-
-#include "igen.h"
-
-#include "ld-decode.h"
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-
-static const name_map decode_type_map[] = {
- {"normal", normal_decode_rule},
- {"boolean", boolean_rule},
- {NULL, normal_decode_rule},
-};
-
-static const name_map decode_gen_map[] = {
- {"array", array_gen},
- {"switch", switch_gen},
- {"padded-switch", padded_switch_gen},
- {"goto-switch", goto_switch_gen},
- {NULL, -1},
-};
-
-static const name_map decode_reserved_map[] = {
- {"zero-reserved", 1},
- {NULL, 0},
-};
-
-static const name_map decode_duplicates_map[] = {
- {"duplicate", 1},
- {NULL, 0},
-};
-
-static const name_map decode_combine_map[] = {
- {"combine", 1},
- {NULL, 0},
-};
-
-static const name_map decode_search_map[] = {
- {"constants", decode_find_constants},
- {"mixed", decode_find_mixed},
- {"strings", decode_find_strings},
- {NULL, decode_find_mixed},
-};
-
-
-static void
-set_bits (int bit[max_insn_bit_size], unsigned64 value)
-{
- int bit_nr;
- for (bit_nr = 0; bit_nr < max_insn_bit_size; bit_nr++)
- {
- if (bit_nr < options.insn_bit_size)
- bit[bit_nr] = (value >> (options.insn_bit_size - bit_nr - 1)) & 1;
- else
- bit[bit_nr] = 0;
- }
-}
-
-decode_table *
-load_decode_table (char *file_name)
-{
- table *file = table_open (file_name);
- table_entry *entry;
- decode_table *table = NULL;
- decode_table **curr_rule = &table;
- while ((entry = table_read (file)) != NULL)
- {
- char *decode_options = entry->field[decode_options_field];
- decode_table *new_rule = ZALLOC (decode_table);
- if (entry->nr_fields < min_nr_decode_fields)
- error (entry->line, "Missing decode table fields\n");
- new_rule->line = entry->line;
-
- /* the options field */
- new_rule->type = name2i (decode_options, decode_type_map);
- if (options.decode.overriding_gen != NULL)
- new_rule->gen =
- name2i (options.decode.overriding_gen, decode_gen_map);
- else
- new_rule->gen = name2i (decode_options, decode_gen_map);
- if (new_rule->gen == padded_switch_gen && options.decode.switch_as_goto)
- new_rule->gen = goto_switch_gen;
- if (options.decode.zero_reserved)
- new_rule->with_zero_reserved = 1;
- else
- new_rule->with_zero_reserved =
- name2i (decode_options, decode_reserved_map);
- if (options.decode.duplicate)
- new_rule->with_duplicates = 1;
- else
- new_rule->with_duplicates =
- name2i (decode_options, decode_duplicates_map);
- if (options.decode.combine)
- new_rule->with_combine = 1;
- else
- new_rule->with_combine = name2i (decode_options, decode_combine_map);
- if (new_rule->type == boolean_rule)
- {
- char *chp = decode_options;
- while (*chp != '\0')
- {
- if (isdigit (*chp))
- {
- new_rule->constant = a2i (chp);
- break;
- }
- chp = skip_to_separator (chp, ",");
- chp = skip_spaces (chp);
- }
- }
-
- /* First and last */
- if (entry->nr_fields > decode_first_field
- && strlen (entry->field[decode_first_field]) > 0)
- {
- new_rule->first = target_a2i (options.hi_bit_nr,
- entry->field[decode_first_field]);
- if (new_rule->first < 0 || new_rule->first >= options.insn_bit_size)
- error (new_rule->line, "First field out of range\n");
- }
- else
- new_rule->first = 0;
- if (entry->nr_fields > decode_last_field
- && strlen (entry->field[decode_last_field]) > 0)
- {
- new_rule->last = target_a2i (options.hi_bit_nr,
- entry->field[decode_last_field]);
- if (new_rule->last < 0 || new_rule->last >= options.insn_bit_size)
- error (new_rule->line, "Last field out of range\n");
- }
- else
- new_rule->last = options.insn_bit_size - 1;
- if (new_rule->first > new_rule->last)
- error (new_rule->line, "First must preceed last\n");
-
- /* force first/last, with default values based on first/last */
- if (entry->nr_fields > decode_force_first_field
- && strlen (entry->field[decode_force_first_field]) > 0)
- {
- new_rule->force_first = target_a2i (options.hi_bit_nr,
- entry->
- field
- [decode_force_first_field]);
- if (new_rule->force_first < new_rule->first
- || new_rule->force_first > new_rule->last + 1)
- error (new_rule->line, "Force first out of range\n");
- }
- else
- new_rule->force_first = new_rule->last + 1;
- if (entry->nr_fields > decode_force_last_field
- && strlen (entry->field[decode_force_last_field]) > 0)
- {
- new_rule->force_last = target_a2i (options.hi_bit_nr,
- entry->
- field[decode_force_last_field]);
- if (new_rule->force_last > new_rule->last
- || new_rule->force_last < new_rule->first - 1)
- error (new_rule->line, "Force-last out of range\n");
- }
- else
- new_rule->force_last = new_rule->first - 1;
-
- /* fields to be treated as constant */
- if (entry->nr_fields > decode_constant_field_names_field)
- filter_parse (&new_rule->constant_field_names,
- entry->field[decode_constant_field_names_field]);
-
- /* applicable word nr */
- if (entry->nr_fields > decode_word_nr_field)
- new_rule->word_nr = a2i (entry->field[decode_word_nr_field]);
-
- /* required instruction format names */
- if (entry->nr_fields > decode_format_names_field)
- filter_parse (&new_rule->format_names,
- entry->field[decode_format_names_field]);
-
- /* required processor models */
- if (entry->nr_fields > decode_model_names_field)
- filter_parse (&new_rule->model_names,
- entry->field[decode_model_names_field]);
-
- /* required paths */
- if (entry->nr_fields > decode_paths_field
- && strlen (entry->field[decode_paths_field]) > 0)
- {
- decode_path_list **last = &new_rule->paths;
- char *chp = entry->field[decode_paths_field];
- do
- {
- (*last) = ZALLOC (decode_path_list);
- /* extra root/zero entry */
- (*last)->path = ZALLOC (decode_path);
- do
- {
- decode_path *entry = ZALLOC (decode_path);
- entry->opcode_nr = a2i (chp);
- entry->parent = (*last)->path;
- (*last)->path = entry;
- chp = skip_digits (chp);
- chp = skip_spaces (chp);
- }
- while (*chp == '.');
- last = &(*last)->next;
- }
- while (*chp == ',');
- if (*chp != '\0')
- error (entry->line, "Invalid path field\n");
- }
-
- /* collect up the list of optional special conditions applicable
- to the rule */
- {
- int field_nr = nr_decode_fields;
- while (entry->nr_fields > field_nr)
- {
- decode_cond *cond = ZALLOC (decode_cond);
- decode_cond **last;
- if (entry->nr_fields > field_nr + decode_cond_mask_field)
- set_bits (cond->mask,
- a2i (entry->
- field[field_nr + decode_cond_mask_field]));
- if (entry->nr_fields > field_nr + decode_cond_value_field)
- {
- if (entry->field[field_nr + decode_cond_value_field][0] ==
- '!')
- {
- cond->is_equal = 0;
- set_bits (cond->value,
- a2i (entry->
- field[field_nr + decode_cond_value_field] +
- 1));
- }
- else
- {
- cond->is_equal = 1;
- set_bits (cond->value,
- a2i (entry->
- field[field_nr +
- decode_cond_value_field]));
- }
- }
- if (entry->nr_fields > field_nr + decode_cond_word_nr_field)
- cond->word_nr =
- a2i (entry->field[field_nr + decode_cond_word_nr_field]);
- field_nr += nr_decode_cond_fields;
- /* insert it */
- last = &new_rule->conditions;
- while (*last != NULL)
- last = &(*last)->next;
- *last = cond;
- }
- }
- *curr_rule = new_rule;
- curr_rule = &new_rule->next;
- }
- return table;
-}
-
-
-int
-decode_table_max_word_nr (decode_table *entry)
-{
- int max_word_nr = 0;
- while (entry != NULL)
- {
- decode_cond *cond;
- if (entry->word_nr > max_word_nr)
- max_word_nr = entry->word_nr;
- for (cond = entry->conditions; cond != NULL; cond = cond->next)
- {
- if (cond->word_nr > max_word_nr)
- max_word_nr = cond->word_nr;
- }
- entry = entry->next;
- }
- return max_word_nr;
-}
-
-
-
-static void
-dump_decode_cond (lf *file, char *prefix, decode_cond *cond, char *suffix)
-{
- lf_printf (file, "%s(decode_cond *) 0x%lx", prefix, (long) cond);
- if (cond != NULL)
- {
- lf_indent (file, +1);
- lf_printf (file, "\n(word_nr %d)", cond->word_nr);
- lf_printf (file, "\n(mask 0x%lx)", (long) cond->mask);
- lf_printf (file, "\n(value 0x%lx)", (long) cond->value);
- lf_printf (file, "\n(is_equal 0x%lx)", (long) cond->is_equal);
- lf_printf (file, "\n(next (decode_cond *) 0%lx)", (long) cond->next);
- lf_indent (file, -1);
- }
- lf_printf (file, "%s", suffix);
-}
-
-
-static void
-dump_decode_conds (lf *file, char *prefix, decode_cond *cond, char *suffix)
-{
- lf_printf (file, "%s(decode_cond *) 0x%lx", prefix, (long) cond);
- while (cond != NULL)
- {
- dump_decode_cond (file, "\n(", cond, ")");
- cond = cond->next;
- }
- lf_printf (file, "%s", suffix);
-}
-
-
-void
-dump_decode_rule (lf *file, char *prefix, decode_table *rule, char *suffix)
-{
- lf_printf (file, "%s(decode_table *) 0x%lx", prefix, (long) rule);
- if (rule != NULL)
- {
- lf_indent (file, +1);
- dump_line_ref (file, "\n(line ", rule->line, ")");
- lf_printf (file, "\n(type %s)", i2name (rule->type, decode_type_map));
- lf_printf (file, "\n(gen %s)", i2name (rule->gen, decode_gen_map));
- lf_printf (file, "\n(first %d)", rule->first);
- lf_printf (file, "\n(last %d)", rule->last);
- lf_printf (file, "\n(force_first %d)", rule->force_first);
- lf_printf (file, "\n(force_last %d)", rule->force_last);
- dump_filter (file, "\n(constant_field_names \"",
- rule->constant_field_names, "\")");
- lf_printf (file, "\n(constant 0x%x)", rule->constant);
- lf_printf (file, "\n(word_nr %d)", rule->word_nr);
- lf_printf (file, "\n(with_zero_reserved %d)", rule->with_zero_reserved);
- lf_printf (file, "\n(with_duplicates %d)", rule->with_duplicates);
- lf_printf (file, "\n(with_combine %d)", rule->with_combine);
- dump_filter (file, "\n(format_names \"", rule->format_names, "\")");
- dump_filter (file, "\n(model_names \"", rule->model_names, "\")");
- dump_decode_conds (file, "\n(conditions ", rule->conditions, ")");
- lf_printf (file, "\n(next 0x%lx)", (long) rule->next);
- lf_indent (file, -1);
- }
- lf_printf (file, "%s", suffix);
-}
-
-
-#ifdef MAIN
-
-static void
-dump_decode_rules (lf *file, char *prefix, decode_table *rule, char *suffix)
-{
- lf_printf (file, "%s", prefix);
- while (rule != NULL)
- {
- lf_indent (file, +1);
- dump_decode_rule (file, "\n(", rule, ")");
- lf_indent (file, -1);
- rule = rule->next;
- }
- lf_printf (file, "%s", suffix);
-}
-
-igen_options options;
-
-int
-main (int argc, char **argv)
-{
- lf *l;
- decode_table *rules;
-
- INIT_OPTIONS (options);
-
- if (argc != 3)
- error (NULL, "Usage: decode <decode-file> <hi-bit-nr>\n");
-
- options.hi_bit_nr = a2i (argv[2]);
- rules = load_decode_table (argv[1]);
- l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-ld-insn");
- dump_decode_rules (l, "(rules ", rules, ")\n");
-
- return 0;
-}
-#endif
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